# [IP] re: unused insulin/last time I promise

```Official Unused Insulin Instructions, copied from my training handout:

The "insulin Used" rule considers how much insulin is still left in your body
from your last bolus.  Using the assumption that Humalog is gone after 3 hrs,
you calculate that 33% of the bolus is used each hour.  Hulalog is used at a
rate of 33% per hour over 3 hours (very ballpark, according to Michael, but
lots easier)

If you want to correct a high BG in between meals, you must take into
consideration whether or not there is still any Humalog from previous bolas
left on board.
1.  Determine how many hours have gone by since last bolus and this will tell
you for how many hours you still have some humalog working.(ie if you assume
it is gone in 3 hours and 2 hrs have already passed, you still have 33% of
2.  Multiply the percnetage of insulin left, by the toa=tal amoung of insulin
you last bolused.  You now know the number of units still working in your
body.  Subtract this number from the amount you calculated you needed for a
high BG correction so you do not over correct.

Remember, this is only used for highs. (Don't do as I did at first and use it
for each and every bolus!)
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Insulin Pumpers website http://www.insulin-pumpers.org/
for mail subscription assistance, contact: HELP@insulin-pumpers.org

```